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Finding the Fourth Proportional to 51,920.80, 77,900.40 and 50,000.80

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Solution

The fourth proportional to 51,920.80, 77,900.40 and 50,000.80 is: 75,019.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,920.80 : 77,900.40 = 50,000.80 : x
  2. Step 2: Convert to fraction form
    51,920.80/77,900.40 = 50,000.80/x
  3. Step 3: Cross multiply
    51,920.80x = 77,900.40 × 50,000.80
  4. Step 4: Simplify right side
    51,920.80x = 3,895,082,320.32
  5. Step 5: Solve for x
    x = 3,895,082,320.32/51,920.80
  6. Step 6: Final answer
    x = 75,019.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.